A company in Qatar booked me to fly to Doha for a two night business trip from Dubai. I checked and made sure I had vaccinations and negative test but on arrival I have been stopped, had my passport taken and boarding card. Apparently I should not have been allowed to travel as I do not have relevant entry visa. It's now coming up for four hours. No water no food no passport no information. I am trying to book a flight back to Dubai today but as I have no passport I cannot even move from arrivals. Because if they come looking for me they won't find me. The shift has changed and nobody knows what's happening. I am 64 years old and this is now becoming extremely uncomfortable. Apparently the immigration captain has my passport and is making a case.